HACH LANGE ORBISPHERE 3654 User manual

ORBISPHERE Model 3654
Portable Analyzer
USER MANUAL
June 2009, Revision I

1
Table of Contents
Section 1 General Information......................................................................................................... 3
1.1 Disclaimer .................................................................................................................................... 3
1.2 Safety information ........................................................................................................................ 3
1.2.1 Use of hazard information................................................................................................... 3
1.2.2 Service and repairs ............................................................................................................. 3
1.2.3 Precautionary labels............................................................................................................ 4
1.3 Product recycling information....................................................................................................... 5
1.4 Product disposal .......................................................................................................................... 7
Section 2 Specifications.................................................................................................................... 9
2.1 Instrument specifications ............................................................................................................. 9
2.2 Sensor specifications ................................................................................................................. 10
Section 3 Installation........................................................................................................................ 11
3.1 What you have received ............................................................................................................ 11
3.2 WIN3654 PC program installation..............................................................................................11
3.3 Atmospheric pressure equilibrium.............................................................................................. 12
3.4 Sensor installation...................................................................................................................... 12
3.5 Purge gas connection ................................................................................................................ 12
3.6 Connections ............................................................................................................................... 13
3.6.1 External power supply (optional)....................................................................................... 13
3.6.2 Instrument - PC connection............................................................................................... 13
3.7 Flow chamber installation .......................................................................................................... 14
3.8 Installation completion check list................................................................................................ 15
3.8.1 Power................................................................................................................................ 15
3.8.2 Check the purge gas supply.............................................................................................. 15
3.8.3 Instrument clock setting .................................................................................................... 15
3.8.4 Barometric pressure setting .............................................................................................. 15
3.8.5 Sensor membrane............................................................................................................. 15
3.8.6 Flow chamber.................................................................................................................... 15
Section 4 Operating Instructions.................................................................................................. 17
4.1 Operating controls...................................................................................................................... 17
4.2 Taking measurements ............................................................................................................... 18
4.2.1 Select gas measurement phase........................................................................................ 19
4.2.2 Measurement mode .......................................................................................................... 19
4.3 Storing measurements in the instrument ................................................................................... 19
4.3.1 Automatic data acquisition ................................................................................................20
4.3.2 Manual data acquisition ....................................................................................................21
4.3.3 Viewing stored measurements.......................................................................................... 22
4.4 Storing and accessing measurements from a computer............................................................ 22
4.4.1 Downloading stored values............................................................................................... 22
4.4.2 Altering the sampling point descriptions............................................................................ 23
4.4.3 Copying values.................................................................................................................. 23
4.4.4 Saving values.................................................................................................................... 23
4.4.5 Printing values................................................................................................................... 23
4.4.6 Clearing stored values ...................................................................................................... 24
4.5 Monitoring measurements in real-time....................................................................................... 24
4.6 After use and storage................................................................................................................. 25
Section 5 Options Setup ................................................................................................................. 27
5.1 Main menu basics ...................................................................................................................... 27
5.2 Analyzer - PC connection .......................................................................................................... 29
5.3 Reviewing instrument configuration ...........................................................................................29
5.4 Configuring the instrument......................................................................................................... 29
5.4.1 Gas measurement phase.................................................................................................. 29
5.4.2 Measurement units............................................................................................................ 30
5.4.3 Membrane selection.......................................................................................................... 31

2
Table of Contents
5.4.4 Automatic data acquisition - setting sampling intervals.....................................................31
5.4.5 Calibration medium ...........................................................................................................31
5.4.6 Locking out the instrument’s CAL button...........................................................................32
5.4.7 Rolling average .................................................................................................................32
5.4.8 Automatic shutdown ..........................................................................................................32
5.4.9 Measurement mode ..........................................................................................................32
Section 6 Calibrations......................................................................................................................33
6.1 Barometric pressure sensor calibration......................................................................................33
6.2 Sensor calibration.......................................................................................................................33
6.2.1 Calibration setup ...............................................................................................................34
6.2.2 Calibration in H2or N2at atmospheric pressure ...............................................................35
6.2.3 Calibration in H2or N2at elevated pressure .....................................................................36
6.2.4 Calibrating in a liquid H2or N2solution .............................................................................37
Section 7 Accessories and Attachments ....................................................................................39
7.1 Model 32311 flow meter.............................................................................................................39
7.2 Model 32939 external power supply...........................................................................................39
Section 8 Maintenance and Troubleshooting.............................................................................41
8.1 Power supply..............................................................................................................................41
8.2 Sensor maintenance ..................................................................................................................41
8.2.1 Maintenance schedule ......................................................................................................41
8.2.2 Mounting dual membranes................................................................................................41
8.2.3 Testing the sensor condition .............................................................................................42
8.3 Membrane replacement .............................................................................................................42
8.3.1 Removing the membrane ..................................................................................................42
8.3.2 Installing the membrane ....................................................................................................43
8.4 Purge gas cylinder refill..............................................................................................................45
8.4.1 N2Purge gas.....................................................................................................................46
8.4.2 CO2Purge gas ..................................................................................................................46
8.4.3 Filling the purge gas cylinder.............................................................................................46
8.5 Troubleshooting - instrument......................................................................................................47
8.5.1 Serial test ..........................................................................................................................47
8.5.2 Keyboard test ....................................................................................................................47
8.5.3 Display test........................................................................................................................47
8.5.4 Clock settings ....................................................................................................................48
8.5.5 Analog voltages view.........................................................................................................48
8.5.6 Measurements view ..........................................................................................................49
8.6 Troubleshooting - operation .......................................................................................................49
8.6.1 Program identification........................................................................................................49
8.6.2 Diagnostic messages ........................................................................................................49
8.6.3 Continuous purge ..............................................................................................................49
8.6.4 Troubleshooting table........................................................................................................50
Section 9 Part Lists...........................................................................................................................51
9.1 Instrument configurations...........................................................................................................51
9.2 TC sensor and parts on configured system................................................................................51
9.3 Analyzer spare parts ..................................................................................................................52
9.4 Sensor spare parts.....................................................................................................................52
Section 10 Glossary of Terms........................................................................................................53
10.1 Common units ..........................................................................................................................53
10.2 Terms and definitions...............................................................................................................53

3
Section 1 General Information
1.1 Disclaimer
The information in this manual has been carefully checked and is believed to be accurate.
However, Hach Lange assumes no responsibility for any inaccuracies that may be contained in
this manual. In no event will Hach Lange be liable for direct, indirect, special, incidental, or
consequential damages resulting from any defect or omission in this manual, even if advised of
the possibility of such damages. In the interest of continued product development, Hach Lange
reserves the right to make improvements in this manual and the products it describes at any
time, without notice or obligation.
Copyright © 2009 by Hach Lange. All rights reserved. No part of the contents of this manual
may be reproduced or transmitted in any form or by any means without the written permission of
Hach Lange.
1.2 Safety information
For safe operation, please read the entire manual before unpacking, setting up, or operating this
instrument.
Pay particular attention to all warning and caution statements. Failure to do so could result in
serious injury to the operator or damage to the equipment.
To ensure the protection provided by this equipment is not impaired, do not use or install this
equipment in any manner other than that which is specified in this manual.
1.2.1 Use of hazard information
WARNING
A warning is used to indicate a condition which, if not met, could cause serious personal injury
and/or death. Do not move beyond a warning until all conditions have been met.
CAUTION
A caution is used to indicate a condition which, if not met, could cause minor or
moderate personal injury and/or damage to the equipment. Do not move beyond a
caution until all conditions have been met.
Note: A note is used to indicate important information or instructions that should be considered
before operating the equipment.
1.2.2 Service and repairs
None of the instrument’s components can be serviced by the user. Only personnel from Hach
Lange or its approved representative(s) is (are) authorized to attempt repairs to the instrument
and only components formally approved by the manufacturer should be used. Any attempt at
repairing the instrument in contravention of these principles could cause damage to the
instrument and corporal injury to the person carrying out the repair. It renders the warranty null
and void and could compromise the correct working of the instrument and the electrical integrity
or the CE compliance of the instrument.
If you have any problems with installation, starting, or using the instrument please contact the
company that sold it to you. If this is not possible, or if the results of this approach are not
satisfactory, please contact the manufacturer’s Customer Service.

4
General Information
1.2.3 Precautionary labels
Read all labels and tags attached to the instrument. Personal injury or damage to the instrument
could occur if not observed.
This symbol, when noted on a product enclosure or barrier, indicates that a risk of electrical
shock and/or electrocution exists and indicates that only individuals qualified to work with
hazardous voltages should open the enclosure or remove the barrier.
This symbol, when noted on the product, indicates that the marked item can be hot and
should not be touched without care.
This symbol, when noted on the product, indicates the presence of devices sensitive to
electrostatic discharge and indicates that care must be taken to prevent damage to them.
This symbol, when noted on the product, identifies a risk of chemical harm and indicates that
only individuals qualified and trained to work with chemicals should handle chemicals or
perform maintenance on chemical delivery systems associated with the equipment.
This symbol, if noted on the product, indicates the need for protective eye wear.
This symbol, when noted on the product, identifies the location of the connection for protective
earth (ground).
Electrical equipment marked with this symbol may not be disposed of in European public
disposal systems. In conformity with European local and national regulations, European
electrical equipment users must now return old or end-of-life equipment to the manufacturer
for disposal at no charge to the user.
Products marked with this symbol indicates that the product contains toxic or hazardous
substances or elements. The number inside the symbol indicates the environmental protection
use period in years.

5
General Information
1.3 Product recycling information
ENGLISH
Electrical equipment marked with this symbol may not be disposed of in
European public disposal systems after 12 August 2005. In conformity with
European local and national regulations (EU Directive 2002/96/EC), European
electrical equipment users must now return old or end-of-life equipment to the
manufacturer for disposal at no charge to the user.
Note: For return for recycling, please contact the equipment
manufacturer or supplier for instructions on how to return end-of-life
equipment for proper disposal.
DEUTSCH
Elektrogeräte, die mit diesem Symbol gekennzeichnet sind, dürfen in Europa nach dem 12.
August 2005 nicht mehr über die öffentliche Abfallentsorgung entsorgt werden. In
Übereinstimmung mit lokalen und nationalen europäischen Bestimmungen (EU-Richtlinie
2002/96/EC), müssen Benutzer von Elektrogeräten in Europa ab diesem Zeitpunkt alte bzw. zu
verschrottende Geräte zur Entsorgung kostenfrei an den Hersteller zurückgeben.
Hinweis: Bitte wenden Sie sich an den Hersteller bzw. an den Händler, von dem Sie das Gerät
bezogen haben, um Informationen zur Rückgabe des Altgeräts zur ordnungsgemäßen
Entsorgung zu erhalten.
FRANCAIS
A partir du 12 août 2005, il est interdit de mettre au rebut le matériel électrique marqué de ce
symbole par les voies habituelles de déchetterie publique. Conformément à la réglementation
européenne (directive UE 2002/96/EC), les utilisateurs de matériel électrique en Europe doivent
désormais retourner le matériel usé ou périmé au fabricant pour élimination, sans frais pour
l'utilisateur.
Remarque: Veuillez vous adresser au fabricant ou au fournisseur du matériel pour les
instructions de retour du matériel usé ou périmé aux fins d'élimination conforme.
ITALIANO
Le apparecchiature elettriche con apposto questo simbolo non possono essere smaltite nelle
discariche pubbliche europee successivamente al 12 agosto 2005. In conformità alle normative
europee locali e nazionali (Direttiva UE 2002/96/EC), gli utilizzatori europei di apparecchiature
elettriche devono restituire al produttore le apparecchiature vecchie o a fine vita per lo
smaltimento senza alcun costo a carico dell’utilizzatore.
Nota: Per conoscere le modalità di restituzione delle apparecchiature a fine vita da riciclare,
contattare il produttore o il fornitore dell’apparecchiatura per un corretto smaltimento.
DANSK
Elektriske apparater, der er mærket med dette symbol, må ikke bortskaffes i europæiske offentlige
affaldssystemer efter den 12. august 2005. I henhold til europæiske lokale og nationale regler
(EU-direktiv 2002/96/EF) skal europæiske brugere af elektriske apparater nu returnere gamle eller
udtjente apparater til producenten med henblik på bortskaffelse uden omkostninger for brugeren.
Bemærk: I forbindelse med returnering til genbrug skal du kontakte producenten eller
leverandøren af apparatet for at få instruktioner om, hvordan udtjente apparater bortskaffes
korrekt.

6
General Information
SVENSKA
Elektronikutrustning som är märkt med denna symbol kanske inte kan lämnas in på europeiska
offentliga sopstationer efter 2005-08-12. Enligt europeiska lokala och nationella föreskrifter
(EU-direktiv 2002/96/EC) måste användare av elektronikutrustning i Europa nu återlämna gammal
eller utrangerad utrustning till tillverkaren för kassering utan kostnad för användaren.
Obs! Om du ska återlämna utrustning för återvinning ska du kontakta tillverkaren av utrustningen
eller återförsäljaren för att få anvisningar om hur du återlämnar kasserad utrustning för att den ska
bortskaffas på rätt sätt.
ESPANOL
A partir del 12 de agosto de 2005, los equipos eléctricos que lleven este símbolo no deberán ser
desechados en los puntos limpios europeos. De conformidad con las normativas europeas
locales y nacionales (Directiva de la UE 2002/96/EC), a partir de esa fecha, los usuarios
europeos de equipos eléctricos deberán devolver los equipos usados u obsoletos al fabricante de
los mismos para su reciclado, sin coste alguno para el usuario.
Nota: Sírvase ponerse en contacto con el fabricante o proveedor de los equipos para solicitar
instrucciones sobre cómo devolver los equipos obsoletos para su correcto reciclado.
NEDERLANDS
Elektrische apparatuur die is voorzien van dit symbool mag na 12 augustus 2005 niet meer
worden afgevoerd naar Europese openbare afvalsystemen. Conform Europese lokale en
nationale wetgegeving (EU-richtlijn 2002/96/EC) dienen gebruikers van elektrische apparaten
voortaan hun oude of afgedankte apparatuur kosteloos voor recycling of vernietiging naar de
producent terug te brengen.
Nota: Als u apparatuur voor recycling terugbrengt, moet u contact opnemen met de producent of
leverancier voor instructies voor het terugbrengen van de afgedankte apparatuur voor een juiste
verwerking.
POLSKI
Sprzęt elektryczny oznaczony takim symbolem nie może byćlikwidowany w europejskich
systemach utylizacji po dniu 12 sierpnia 2005. Zgodnie z europejskimi, lokalnymi i państwowymi
przepisami prawa (Dyrektywa Unii Europejskiej 2002/96/EC), użytkownicy sprzętu elektrycznego
w Europie musząobecie przekazywaćProducentowi stary sprzęt lub sprzęt po okresie
użytkowania do bezpłatnej utylizacji.
Uwaga: Aby przekazaćsprzęt do recyklingu, należy zwrócićsiędo producenta lub dostawcy
sprzętu w celu uzyskania instrukcji dotyczących procedur przekazywania do utylizacji sprzętu po
okresie użytkownia.
PORTUGUES
Qualquer equipamento eléctrico que ostente este símbolo não poderá ser eliminado através dos
sistemas públicos europeus de tratamento de resíduos sólidos a partir de 12 de Agosto de 2005.
De acordo com as normas locais e europeias (Directiva Europeia 2002/96/EC), os utilizadores
europeus de equipamentos eléctricos deverão agora devolver os seus equipamentos velhos ou
em fim de vida ao produtor para o respectivo tratamento sem quaisquer custos para o utilizador.
Nota: No que toca à devolução para reciclagem, por favor, contacte o produtor ou fornecedor do
equipamento para instruções de devolução de equipamento em fim de vida para a sua correcta
eliminação.

7
General Information
1.4 Product disposal
Note: The following only applies to European customers.
Hach Lange is committed to ensuring that the risk of any environmental damage or pollution
caused by any of its products is minimized as far as possible. The European Waste Electrical
and Electronic Equipment (WEEE) Directive (2002/96/EC) that came into force on August 13
2005 aims to reduce the waste arising from electrical and electronic equipment; and improve the
environmental performance of all those involved in the life cycle of electrical and electronic
equipment.
In conformity with European local and national regulations (EU Directive 2002/96/EC stated
above), electrical equipment marked with the above symbol may not be disposed of in
European public disposal systems after 12 August 2005.
Hach Lange will offer to take back (free of charge to the customer) any old, unserviceable or
redundant analyzers and systems which carry the above symbol, and which were originally
supplied by Hach Lange. Hach Lange will then be responsible for the disposal of this
equipment.
In addition, Hach Lange will offer to take back (at cost to the customer) any old, unserviceable
or redundant analyzers and systems which do not carry the above symbol, but which were
originally supplied by Hach Lange. Hach Lange will then be responsible for the disposal of this
equipment.
Should you wish to arrange for the disposal of any piece of equipment originally supplied by
Hach Lange, please contact your supplier or our After Sales Service department in Geneva for
instructions on how to return this equipment for proper disposal.

8
General Information

9
Section 2 Specifications
Specifications are subject to change without notice.
2.1 Instrument specifications
Note: In accordance with the Pressure Equipment Directive 97/23/EC (Article 3.3), the components that
make up the purge gas cylinder and pressure reducer, are not subject to the technical requirements of this
directive.
GENERAL TECHNICAL DATA
Power Requirements Batteries: two C-type cells, NiCad or alkaline, each 26 mm x 50
mm, 2.4 to 3 volts total
Battery Autonomy 15 hours operational use, 3 weeks purge backup (power off,
purge gas supplied)
Dimensions (HxWxD) 19.8 x 11.5 x 22 cm
Weight (including purge gas cylinder
and sensor) 4.6 kg
Purge Gas Nitrogen (H2sensors)
Carbon Dioxide (N2and H2sensors)
Purge Gas Cylinder Pressure Limit
(see also Note below)
200 bar maximum for N2purge gas
60 bar maximum for CO2purge gas
Purge Gas Autonomy
40 hours when cylinder filled to 200 bar of N2
20 hours when cylinder filled to 100 bar of N2
120 hours when cylinder filled with 75% of CO2liquid
Capacity of Purge Gas Cylinder 65 ml
Digital Output (RS232C)
Baud rate: 4800
Data bits: 8
Stop Bits: 1
Start Bits: 0
Parity: None
Measurement Cycle Time 20 seconds
Temperature of Use 0 to 40°C (32 to 104°F)
Temperature of Sample -5 to 35°C (23 to 95°F)
Sample Pressure Limit (32013A and
32015 flow chambers) < 10 bar, at <= 25° C
Enclosure Protection IP 67
CE Certification EN 61326-1:1997 /A1:1998 /A2:2001 /A3:2003
Directive 89/336/CE

10
Specifications
2.2 Sensor specifications
Table 1 Sensor specifications
Sensor Type 31 270 H2
Membranes 29561A 2952A 2935A
Thickness 25 µm 25 µm 25 µm
Membrane material PFA ETFE ECTFE (Halar)
Recommended applications Waste gas offgas,
reactor coolant Reactor coolant High H2level
Radiation limits 105 rad 108rad 108rad
Measurement range at 25°C
0-1.5 ppm,
or 0-16 cc/kg,
or 0-1 bar
0-5 ppm,
or 0-60 cc/kg,
or 0-3 bar
0-15 ppm,
or 0-180 cc/kg,
or 0-9 bar
Accuracy (sample temp.
20-50°C within ± 5°C of
calibration temperature)
The greater of
±1% of reading
or ± 4 ppb,
or ± 0.06cc/kg,
or ± 3 mbar
The greater of
±1% of reading
or ± 16 ppb,
or ± 0.2cc/kg,
or ± 12 mbar
The greater of
±1% of reading
or ± 45 ppb,
or ± 0.5 cc/kg,
or ± 30 mbar
Accuracy (sample temp.
0-50°C independent of
calibration temperature)
The greater of
±2% of reading
or ± 30 ppb
or ± 0.35 cc/kg
or ± 12 mbar
The greater of
±2% of reading
or ± 120 ppb
or ± 1.2 cc/kg,
or ± 40 mbar
The greater of
±2% of reading
or ± 300 ppb
or ± 3.0 cc/kg,
or ± 100 mbar
Measurement cycle (sec.) 20
Sample flow rate (through
flow chamber) 200 ml/min 100 ml/min 50 ml/min
Table 2 Sensor Specifications
Sensor Type 31 272 H231 570 N2
Membranes 29561A 2952A 2935A 29561A
Thickness 25 µm 25 µm 25 µm 25 µm
Membrane material PFA ETFE ECTFE (Halar) PFA
Recommended
applications
Waste gas and
offgas
Waste gas offgas,
reactor coolant
Reactor coolant
and High H2level Beverage
Radiation limits 105 rad 108rad 108rad 105 rad
Measurement range at 25°C
0-0.075 ppm,
or 0-8 cc/kg,
or 0-0.5 bar
0-2.5 ppm,
or 0-30 cc/kg,
or 0-1.5 bar
0-7.5 ppm,
or 0-90 cc/kg,
or 0-4.5 bar
0-250 ppm,
or 0-200 ml/L,
or 0-15 bar
Accuracy (sample temp.
20-50°C within ± 5°C of
calibration temperature)
The greater of
±1% of reading
or ± 2 ppb,
or ± 0.03 cc/kg,
or ± 2 mbar
The greater of
±1% of reading
or ± 8 ppb,
or ± 0.1cc/kg,
or ± 6 mbar
The greater of
±1% of reading
or ± 25 ppb,
or ± 0.25 cc/kg,
or ± 15 mbar
The greater of
±2% of reading
or ± 0.5 ppm,
or ± 0.5 ml/L,
or ± 30 mbar
Accuracy (sample temp.
0-50°C independent of
calibration temperature)
The greater of
±2% of reading
or ± 60 ppb
or ± 0.7 cc/kg
or ± 25 mbar
The greater of
±2% of reading
or ± 250 ppb
or ± 2.5 cc/kg,
or ± 80 mbar
The greater of
±2% of reading
or ± 600 ppb
or ± 6.0 cc/kg,
or ± 200 mbar
The greater of
±4% of reading
or ± 2 ppm,
or ± 1.6 ml/L,
or ± 70 mbar
Measurement cycle (sec.) 20
Sample flow rate (through
flow chamber) 200 ml/min 100 ml/min 50 ml/min 150 ml/min

11
Section 3 Installation
This section provides necessary information to set up the instrument. If you have any questions
or experience any difficulties, do not hesitate to contact your Hach Lange representative
regarding this procedure.
3.1 What you have received
The ORBISPHERE 3654 portable analyzer includes the following major components:
•An instrument, model 3654/xxx, with keypad, display, and handle.
•A membrane-covered thermal conductivity (TC) sensor, either model 3127x for H2
measurement or model 31570 for N2measurement.
•A flow chamber, either model 32013A with flow adjustment valve for N2analyzers, or model
32015 without flow adjustment valve for H2analyzers.
•A WIN3654 program on a CD with a PC communications cable.
Also included with your shipment are two C-type batteries, a recharge kit in a plastic case
containing materials to maintain your sensor and a model 32824A refilling hose to refill the
purge gas cylinder.
Locate the instrument close to the sample being analyzed, and to the Personal Computer (PC) if
one is being used. A LEMO-6 connector for RS-232 serial output to a PC is on the right side of
the instrument (see Figure 1 above).
Make sure you install a fully charged set of batteries, or connect the instrument to an external
power source (see External power supply (optional) on page 13), before switching the
instrument on and exposing the sensor’s membrane to any liquid.
3.2 WIN3654 PC program installation
Install the WIN3654 program onto the PC by inserting the accompanying CD into your PC and
running the SetUp program. Simply follow the on-screen instructions.
When finished, a new Windows Program Group labeled Orbisphere is created containing the
software and help files.
Figure 1 ORBISPHERE 3654 portable analyzer

12
Installation
3.3 Atmospheric pressure equilibrium
As soon as you receive the instrument, it will be necessary to ensure the interior and exterior of
the instrument are both at the same atmospheric pressure. It is probable that during shipment
these pressures will become different.
To ensure the pressures are equal, simply press the relief valve switch located on the top of the
instrument (see Figure 1 on page 11) and hold it down for about 5 seconds before releasing.
3.4 Sensor installation
The TC sensor connects to the instrument base through a 10-pin LEMO connector. A locking
pin holds the sensor in place.
Both the membrane-covered TC sensor and the flow chamber are shipped pre-installed on the
instrument. It will, however, be necessary to remove the flow chamber when servicing the
sensor. For details refer to Sensor maintenance on page 41.
3.5 Purge gas connection
It is critical that the TC sensor has a supply of purge gas running before operating the system.
The TC sensor, when exposed to a liquid sample, will become damaged if the purge gas is not
running. CO2is used to purge the N2sensor and N2or CO2is used to purge the H2sensor. A
cylinder located at the bottom of the instrument supplies the purge gas. This cylinder is refillable
(see Purge gas cylinder refill on page 45).
The TC sensor is purged cyclically. In measurement mode, a cycle consists of a 4 second purge
followed by 16 seconds of measurement. When the instrument is in standby, the purge time is
the same, followed by a 17 minute delay. During the purge time, the flow rate varies, depending
on the pressure inside the cylinder. At least four bubbles should exit from the purge gas exit
during the purge time.
The purge gas input to the sensor uses a Tygon tube (4 mm outside/2 mm inside diameter, 110
mm long) that attaches to the base of the sensor. Refer to the exploded sensor diagram in
Figure 2 above.
The hole in the side and near the base of the sensor is the purge gas exit. To check the purge
gas flow rate, push the supplied nylon tubing into this hole, to its limit. To disconnect it again,
press on the ring surrounding the tube and pull out.
To check the purge gas flow rate, immerse the end of this tubing in water and switch on the
instrument. Gas should flow intermittently out of the tube.
Note: During normal operation, and especially when the instrument is in standby mode, ensure that the exit
of the purge gas tube is exposed to the atmosphere and not in contact with any liquid or hard surface.
Figure 2 TC sensor - exploded view

13
Installation
3.6 Connections
3.6.1 External power supply (optional)
The instrument is usually powered by the batteries supplied. You can, however, power it from an
external power source using the model 32939 power supply adaptor as described and illustrated
in Model 32939 external power supply on page 39.
Connect the male LEMO-6 plug on the 32939, to the RS-232 connector on the right side of the
instrument. The female LEMO-6 plug can then be used to connect to your PC (if required) using
the standard RS-232 cable supplied with the instrument.
Plug the transformer into your mains power supply using the cable supplied.
Note: If the external power supply is not clean, this may result in unstable measurements.
3.6.2 Instrument - PC connection
An RS-232 cable is supplied with the instrument, with a 6-pin LEMO plug on one end and a
9-pin D-Type plug on the other.
Note: If you use an adapter for the connection to the PC, make sure it is designed for this purpose and,
thus, has all nine pins accessible. Some 25-to-9 pin adapters are supplied for specific use, such as a
mouse, and these may have only certain pins available.
It is not necessary to keep the PC connected to the instrument during measurement. This
connection is required for downloading stored measurements, real-time monitoring, reviewing
and changing configuration parameters and testing the instrument from the PC (see
Troubleshooting - instrument on page 47 for details).
Figure 3 Interface box connections
Pin RS232 Signal
Pin 1 Transmitted data (TXD)
Pin 2 Received data (RXD)
Pin 3 Not Used
Pin 4 Not Used
Pin 5 Not Used
Pin 6 Ground
Pin Use
Pin 1 Not Used
Pin 2 RS-232 Transmitted Data (TXD)
Pin 3 RS-232 Received Data (RXD)
Pin 4 Not Used
Pin 5 Ground
Pin 6 Not Used
Pin 7 Not Used
Pin 8 Not Used
Pin 9 Not Used

14
Installation
3.7 Flow chamber installation
The model 32013A or 32015 flow chamber allows the liquid or gaseous sample past the TC and
temperature sensors. The flow chamber attaches to the TC sensor with a threaded collar and is
sealed to the sensor with two O-rings (EPDM ∅20x2 mm and NBR ∅4x1.5 mm).
CAUTION
At the top of the TC sensor is a thermistor to measure the sample temperature. Do not
bend or damage this component.
The flow chamber’s inlet and outlet use ¼-inch diameter transparent plastic tubing. Connect by
compression fittings to the sample source and to the drain, respectively.
You may also have received a model 32051 sample tube adapter to attach the flow chamber
inlet tubing to the sampling point (see WIN3654 PC program installation on page 11).
Figure 4 Flow chamber 32013A

15
Installation
3.8 Installation completion check list
3.8.1 Power
The instrument is designed to work on battery power or an external power supply. If battery
power should drop, a [LO BAT] warning appears in the instrument LCD's top left corner, and
they should be replaced.
If using an external power supply, ensure that this is clean, otherwise it may result in unstable
measurements.
3.8.2 Check the purge gas supply
It is critical that the TC sensor has a supply of purge gas before operating the system. The TC
sensor, when exposed to a liquid sample, could be damaged if the instrument purge gas
cylinder is empty. At the same time, it is also critical that the instrument has a power supply to
ensure the purge gas is supplied to the sensor on a regular basis. The system purges the
sensor for 4 seconds every 20 seconds during normal measurement mode, and every 17
minutes during standby mode.
A small, pressurized cylinder at the bottom of the instrument supplies purge gas to the sensor.
The purge gas required is:
•N2purge for H2measurements.
•CO2purge for N2or H2measurements.
Verify that the purge gas is flowing at more than four bubbles during the purge cycle, by placing
the purge gas exit tubing into water.
Note: You must supply power constantly to the instrument, since it purges the sensor continuously while
power is on. When you put the instrument in standby, it still maintains the purge gas supply to the sensor.
Thus, make certain to supply battery or optional external DC power constantly if the instrument is in standby
and the sensor is exposed to a sample. The batteries will provide about three weeks of power for purging
while the instrument is off.
3.8.3 Instrument clock setting
If you use the instrument to store measurements for downloading to a PC, you should verify the
date and time settings of the instrument's internal clock, as described in Clock settings on
page 48.
3.8.4 Barometric pressure setting
The internal barometric pressure sensor has been factory calibrated but should be verified
on-site with a precision certified barometer, and corrected if necessary. For instructions on how
to do this, please refer to Barometric pressure sensor calibration on page 33.
3.8.5 Sensor membrane
Check that the membrane has been installed correctly, and is flat, tight, and wrinkle free.
3.8.6 Flow chamber
The flow chamber inlet and outlet should be free of any obstructions. The model 32013A flow
chamber, for dissolved N2measurements, has a flow adjustment valve on the outlet. The model
32015 flow chamber for H2measurements has no valve.
Dissolved gas measurements
Adjust the sample flow rate using the needle valve on the exit. When analyzing carbonated
beverages, sufficient pressure must be provided to avoid degassing of the beverage during its
passage through the flow chamber. Check for the absence of bubbles in the inlet tubing.
Gaseous measurements
Place the outlet tubing in a container of water, ensuring that the flow chamber outlet is
unobstructed (on the 32013A flow chamber, open the outlet valve completely). Then, adjust the
inlet sample flow valve (main supply) to obtain one bubble per second at the outlet.

16
Installation

17
Section 4 Operating Instructions
4.1 Operating controls
The front panel of the instrument has a three-digit liquid crystal display (LCD). The LCD includes
a right-side marker to distinguish between gas concentration and temperature display. This
marker also indicates the measurement display units (g/kg, V/V, etc.) depending on the
instrument configuration. To the LCD's right is a label showing the measurement units
configured at the factory for your application.
In addition to the controls indicated on the front panel, there is also a pressure relief valve on
top of the instrument (as indicated in Figure 1 on page 11). This button need only be pressed as
part of the installation procedures, and/or if pressure builds up inside the instrument due to large
temperature changes.
The panel keyboard has the following push-button controls:
Figure 5 Instrument front panel
Power switch. Turns instrument power on or places in standby. When
switched on, the instrument performs a series of start-up procedures
before switching to measurement mode
Places the instrument in measurement mode
Calibrates the analyzer against a reference sample. This button can be
locked out using the WIN3654 PC program
Stores a measurement value into memory
Backlights the LCD for approximately three minutes

18
Operating Instructions
You can access other instrument functions by pushing one of the following keys while also
pressing the power button:
Once you have completed the installation and start-up procedures defined in Installation on
page 11, the analyzer can be operated independently, making measurements as a portable
hydrogen or nitrogen gas analyzer.
You may store these measurement values for later analysis via the WIN3654 program (on your
personal computer) or the memory view mode (on the instrument). The WIN3654 program
operation is described in detail throughout the manual, where relevant.
4.2 Taking measurements
To start the analyzer, press the POWER switch (located bottom left of the keyboard). When you
turn power on, the instrument displays the software version number briefly, and then starts a
series of start-up tests. This process should take only a few minutes, during which time a [tSt]
message is displayed on the LCD. Once the tests are completed, a clearing message [---] is
displayed for a further sixty seconds before the instrument switches automatically to
measurement mode.
Note: The start-up tests will be repeated until successful, or for a maximum of 15 minutes. If the tests are
still unsuccessful after 15 minutes, a [Err] message will be displayed and the instrument locked. Turn the
instrument off and retry the start-up procedures, but if the problem persists, please contact your local Hach
Lange service representative for assistance.
Measurement updates are displayed every 20 seconds, and it is normal for the right-most digits
to vary in reaction to slight variations in gas content. For accurate measurements, the sensor's
membrane must be at the same temperature as the sample to be analyzed. If this not the case,
allow some sample to pass through the flow chamber for about 3 minutes before taking any
measurements.
Toggles between gas concentration and temperature measurement
displays in measurement mode, increases or decreases the storage
number during storage or memory view, or sets a calibration value during
calibration
Selects dissolved or gaseous measurement phase - see Gas
measurement phase on page 29
Start automatic data acquisition - see Automatic data acquisition on
page 20
Start memory storage view - see Viewing stored measurements on
page 22
Starts continuous purge mode - see Continuous purge on page 49
Display program identification information